Pre-Switch shows 99.57% efficiency for 100kHz inverter
Pre-Switch has published new data showing the efficiency of its AI-enabled switching technology hits a peak of 99.57% with 98.5% efficiency at 5% load in a 200kW inverter design.
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The tests were performed on Pre-Switch’s CleanWave2 200kW reference inverter at a switching speed of 100kHz
“Over a year ago we announced peak efficiency figures of over 99%. Since that time, we have been improving our AI algorithm to improve low-load performance. The results are astonishing. 98.5% efficiency at 5% load is far in excess of what can be achieved by any other approach today, proving that soft-switching and the Pre-Switch architecture will lead the emobility electrification revolution,” said Bruce Renouard, CEO of Pre-Switch.
The pre-switch technique eliminates switching losses, enabling 10X higher switching frequencies, resulting in huge efficiency gains. In EVs this leads to improved motor efficiency, range and reliability.
The efficiency at low loads and high frequency low distortion sine wave to the motor are key to improving the WLTP range performance. The topology is a variation of the Auxiliary Resonant Commutated Pole (ARCP) soft-switching converter design with embedded artificial intelligence to solve complex switching system timing calculations dynamically to ensure accurate soft-switching under changing input voltage, output load, device tolerances, and temperature changes. Adaptations are made on a cycle-by-cycle basis to minimize losses and maximize efficiency.
“We believe that our technology is the paradigm shift that EV OEMs have been searching for, enabling essential efficiency differentiation and EV leadership. These results prove how effective our technology is and definitively validate our previous claims,” said Renouard.
Pre-Switch is working with EV makers and other e-mobility companies and evaluation systems are available for other interested parties.
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